SEW-Eurodrive Movigear Performance MGF**-DFC-C Series, Operating Instructions Manual

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9
Inspection and maintenance
Inspection and maintenance work
Operating Instructions – MOVIGEAR
®
performance
289
9.4.3 Replacing the output oil seal
1. Observe the notes in chapter "Preliminary work for inspection and maintenance".
2. Remove the drive unit from the system.
3. NOTICE! Oil seals with a temperature below 0 °C may get damaged during install-
ation. Potential damage to property. Store oil seals at ambient temperatures over
0 °C. Warm up the oil seals before you install them, if necessary.
When changing the oil seal, ensure that there is a sufficient grease reservoir
between the dust lip and sealing lip, depending on the type of gear unit.
ð If you use double oil seals, fill one-third of the gap with grease.
ð
Do not install the oil seal on the same track.
4. Touch up or renew the surfaces / anti‑corrosion coating.
9.4.4 Painting the drive unit
1. Observe the notes in chapter "Preliminary work for inspection and maintenance".
2. NOTICE! Breather valves and oil seals may be damaged during painting or re-
painting. Potential damage to property. Thoroughly cover the breather valves and
sealing lip of the oil seals with strips prior to painting.
Clean the surface of the drive unit and make sure it is free from grease.
3. Remove the strips after painting.
9.4.5 Cleaning the drive unit
Observe the notes in chapter "Preliminary work for inspection and maintenance".
Excessive dirt, dust or shavings can have a negative impact on the function of syn-
chronous motors; in extreme cases, these factors can cause the motor to break down.
For this reason, you must clean the drives at regular intervals (after one year at the
latest) to ensure a sufficiently large area for heat dissipation.
Insufficient heat dissipation can have unwanted consequences. The bearing service
life is reduced through operation at impermissibly high temperatures (bearing grease
degrades).
9.4.6 Connection cables
Observe the notes in chapter "Preliminary work for inspection and maintenance".
Check the connection cables for damage at regular intervals and replace if necessary.
9.4.7 Replacing the gasket between connection box and electronics cover
Spare part kit
The gasket is available as a spare part (1, 10 or 50 pieces) from SEW‑EURODRIVE.
25945475/EN – 04/2019